<template>
  <div class="xtx-numbox">
    <div class="label" v-if="isText">数量</div>
    <div class="numbox">
      <a href="javascript:;" @click="changeNum(1)">-</a>
      <input type="text" readonly :value="currentNumber" />
      <a href="javascript:;" @click="changeNum(2)">+</a>
    </div>
  </div>
</template>

<script>
import { defineComponent, ref, defineProps, defineEmits } from 'vue'
export default defineComponent({ name: 'XtxNumberBox' })
</script>

<script setup>
const props = defineProps({
  min: {
    type: Number
  },
  max: {
    type: Number
  },
  modelValue: {
    type: Number
  },
  isText: {
    type: Boolean,
    default: true
  }
})
const emits = defineEmits(['modelValue'])
const currentNumber = ref(props.modelValue)
function changeNum(type) {
  if (type === 1) {
    // 如果达到最小值
    if (currentNumber.value === props.min) return
    currentNumber.value--
    emits('update:modelValue', currentNumber.value)
    emits('change', currentNumber.value)
  } else {
    // 如果达到最大值
    if (currentNumber.value === props.max) return
    currentNumber.value++
    emits('update:modelValue', currentNumber.value)
    emits('change', currentNumber.value)
  }
}
</script>

<style scoped lang="less">
.xtx-numbox {
  display: flex;
  align-items: center;
  .label {
    width: 60px;
    color: #999;
    padding-left: 10px;
  }
  .numbox {
    width: 120px;
    height: 30px;
    border: 1px solid #e4e4e4;
    display: flex;
    > a {
      width: 29px;
      line-height: 28px;
      text-align: center;
      background: #f8f8f8;
      font-size: 16px;
      color: #666;
      &:first-of-type {
        border-right: 1px solid #e4e4e4;
      }
      &:last-of-type {
        border-left: 1px solid #e4e4e4;
      }
    }
    > input {
      width: 60px;
      padding: 0 5px;
      text-align: center;
      color: #666;
    }
  }
}
</style>
